How Endometriosis Is Diagnosed: Tests & Laparoscopy
Endometriosis is definitively diagnosed by laparoscopic surgery, where a surgeon visually identifies and can biopsy lesions. Ultrasound and MRI can detect some deep lesions or cysts, but cannot rule out endo. Diagnosis takes an average of 7 to 10 years, so advocacy matters.
Diagnosis methods
No blood test or non-invasive scan can confirm endo with certainty.
- Laparoscopy: the gold standard, allows direct visualization and treatment.
- Transvaginal ultrasound: can detect endometriomas (ovarian cysts) and some deep lesions.
- MRI: may show deep infiltrating endo but cannot rule it out.
- Symptom history and physical exam guide the decision to pursue surgery.
Track how you feel and spot the pattern
PhaseBloom logs your symptoms and mood against your cycle in seconds a day, so you can see which days hit hardest and prepare before they arrive.
Track how you feel and spot the pattern
PhaseBloom logs your symptoms and mood against your cycle in seconds a day, so you can see which days hit hardest and prepare before they arrive.
Frequently asked questions
Can a blood test diagnose endometriosis?
No. There is no reliable blood test for endometriosis yet. Diagnosis requires laparoscopy or, in some cases, imaging that shows characteristic lesions or cysts.
Why does it take so long to diagnose endometriosis?
Symptoms overlap with many conditions, imaging cannot see all lesions, and severe period pain is often dismissed. Advocacy and seeing a specialist can speed the process.